7842824420 has 24 divisors (see below), whose sum is σ = 16639728504. Its totient is φ = 3104787456.

The previous prime is 7842824419. The next prime is 7842824443. The reversal of 7842824420 is 244282487.

It can be written as a sum of positive squares in 4 ways, for example, as 1477018624 + 6365805796 = 38432^2 + 79786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019407 + ... + 2023286.

It is an arithmetic number, because the mean of its divisors is an integer number (693322021).

Almost surely, 2^7842824420 is an apocalyptic number.

It is an amenable number.

7842824420 is an abundant number, since it is smaller than the sum of its proper divisors (8796904084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7842824420 is a wasteful number, since it uses less digits than its factorization.

7842824420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042799 (or 4042797 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 41.

The square root of 7842824420 is about 88559.7223347047. The cubic root of 7842824420 is about 1986.8153079457.

The spelling of 7842824420 in words is "seven billion, eight hundred forty-two million, eight hundred twenty-four thousand, four hundred twenty".